Janata Dal (United), with 7 members of the Lok Sabha, is an ally of the
BJP. The
web page on the union between it and the Samata party claims the unified
party would retain the JD(U)'s symbol of arrow and the green-and-white flag of
the Samata. He said both parties would contest the coming Assembly elections as
the JD(U). I have been unable to find any image.Knut A. Berg, 20 October 2004

At
http://www.tribuneindia.com/2005/20050118/elec3.jpg one finds a version of
the Janata Dal (United) flag, a horizontally divided green-white green flag with
the party symbol of the arrow and some writing above it on the white field.
Presumably the writing is the party name, but so blurred in the photo I am not
completely certain what alphabet, but would hazard a guess as Latin as it seems
to be ending in a letter U shape.Knut A. Berg, 24 April 2006

Janata Dal (United), is a political party in India. It is an important and
strong ally of the National Democratic Alliance. R.K. Jugnoo, State
Vice-President, Janata Dal (United) Youth Wing, 13 February 2009

JD(U) currently heads the government of Bihar. The
photo (2005) communicated
by Knut Berg shows the party flag as horizontally divided green-white-green with
a red arrow pointing to the hoist placed in the white stripe. The red writing
place above the arrow does not seem to me to be in Latin script but rather in
Hindi (or another local script). Wikipedia
shows the party flag as horizontally divided dark green-white-dark green with a
black arrow pointing to the hoist placed in the white stripe. The black arrow
was the party symbol in the 2001 State elections (http://archive.eci.gov.in/SE2001/parties/national/jd(u).htm).
It was still registered in 2004 (http://www.indiaonestop.com/Election2004/politicalparties.html).Ivan Sache, 14 February 2009

image by Prabhat Ranjan, 4 June 2009

This is the flag of Janata Dal (United), with 20 members of the Lok Sabha and 7 members of the Rajya sabha. Janata Dal (United) currently heads the government of Bihar
led by Mr. Nitish Kumar.Prabhat Ranjan, 4 June 2009